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Social media guru shares his secrets

18 July 2013 Last updated at 05:14 BST

Andrew Bleeker is a social media guru who was instrumental in President Barack Obama's 2012 re-election campaign.

It was one of the biggest digital political campaigns in history.

But since then, he has been helping businesses, rather than politicians, in marketing their brands and products.

He talked to the BBC's Sharanjit Leyl about how he gets people to pay attention.

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